<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" size="small" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="教材名称" prop="textbookName">
        <el-input
          v-model="queryParams.textbookName"
          placeholder="请输入教材名称"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['manage:inventory:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['manage:inventory:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['manage:inventory:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['manage:inventory:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="inventoryList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="库存ID" align="center" prop="id" />
      <el-table-column label="教材名称" align="center" width="180">
        <template slot-scope="scope">
          <span>{{ getTextbookName(scope.row.textbookId) }}</span>
        </template>
      </el-table-column>
      <el-table-column label="库存数量" align="center" prop="stock" />
      <el-table-column label="修改时间" align="center" prop="updateTime" width="180">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.updateTime, '{y}-{m}-{d}') }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['manage:inventory:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['manage:inventory:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改库存列表对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <!-- 修改为下拉框选择教材名称 -->
        <el-form-item label="教材名称" prop="textbookName">
          <el-select v-model="form.selectedTextbookId" placeholder="请选择教材名称">
            <el-option
              v-for="textbook in textbookList"
              :key="textbook.id"
              :label="textbook.textbookName"
              :value="textbook.id"
            />
          </el-select>
        </el-form-item>
        <el-form-item label="库存数量" prop="stock">
          <el-input v-model="form.stock" placeholder="请输入库存数量" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listInventory, getInventory, delInventory, addInventory, updateInventory } from "@/api/manage/inventory";
import { listTextbook } from "@/api/manage/textbook";

export default {
  name: "Inventory",
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 库存列表表格数据
      inventoryList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        textbookId: null,
        textbookName: null
      },
      // 表单参数，添加 textbookName 属性并初始化
      form: {
        id: null,
        textbookId: null,
        stock: null,
        createTime: null,
        createBy: null,
        updateTime: null,
        updateBy: null,
        textbookName: '',
        selectedTextbookId: null // 新增用于下拉框绑定的选中教材id属性
      },
      // 教材列表
      textbookList: [],
      // 表单校验
      rules: {
        textbookId: [
          { required: true, message: "教材ID不能为空", trigger: "blur" }
        ],
        stock: [
          { required: true, message: "库存数量不能为空", trigger: "blur" }
        ],
      }
    };
  },
  created() {
    this.getList();
    this.getTextbookList();
  },
  methods: {
    /** 根据教材ID获取教材名称 */
    getTextbookName(textbookId) {
      const textbook = this.textbookList.find(item => item.id === textbookId);
      return textbook? textbook.textbookName : '未知教材';
    },
    /** 查询教材列表列表 */
    getTextbookList() {
      listTextbook({
        pageNum: 1,
        pageSize: 10000,
        textbookName: null,
        isOnSale: null
      }).then(response => {
        this.textbookList = response.rows;
      })
    },
    /** 查询库存列表列表 */
    getList() {
      this.loading = true;
      listInventory(this.queryParams).then(response => {
        this.inventoryList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        id: null,
        textbookId: null,
        stock: null,
        createTime: null,
        createBy: null,
        updateTime: null,
        updateBy: null,
        textbookName: '',
        selectedTextbookId: null
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.id);
      this.single = selection.length!== 1;
      this.multiple =!selection.length;
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加库存列表";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const id = row.id || this.ids;
      getInventory(id).then(response => {
        this.form = response.data;
        // 根据获取到的教材id查找对应的教材名称并赋值给 form.textbookName
        const textbook = this.textbookList.find(item => item.id === this.form.textbookId);
        this.form.textbookName = textbook? textbook.textbookName : '未知教材';
        // 赋值下拉框对应的选中教材id
        this.form.selectedTextbookId = this.form.textbookId;
        this.open = true;
        this.title = "修改库存列表";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.id!= null) {
            updateInventory(this.form).then(response => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            // 新增操作时将教材id赋值改为使用选中的教材id
            this.form.textbookId = this.form.selectedTextbookId;
            addInventory(this.form).then(response => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const ids = row.id || this.ids;
      this.$modal.confirm('是否确认删除库存列表编号为"' + ids + '"的数据项？').then(function() {
        return delInventory(ids);
      }).then(() => {
        this.getList();
        this.$modal.msgSuccess("删除成功");
      }).catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download('manage/inventory/export', {
       ...this.queryParams
      }, `inventory_${new Date().getTime()}.xlsx`);
    }
  }
}
</script>
